Patients with severe acute pancreatitis will be prospectively and blindly randomised into either a study group who will receive (Lipidem, lipid emulsion contains essential fatty acids and omega-3 fish oil) or a control group that will receive (Lipofundin, lipid emulsion contains only essential fatty acids and no omega-3 fish oil). Normal and standard clinical care will be provided to all patients as per the national management guidelines. Each patient will receive either Lipidem or Lipofundin emulsions daily until they are deemed fit for discharge by their own medical team or for a maximum of SEVEN days.